Insulating cavity walls is one of the most effective energy saving measures you can carry out in the home, helping to reduce your heat loss through the walls by up to 60%. 

As a general rule for most houses built after 1930 the external walls are made of two layers with a small air gap or 'cavity' between them that can be filled.

How It Works

The cavity is injected with insulation via small drill holes from the outside of the wall. The insulating material acts as a barrier, preventing heat from escaping and also preventing the build-up of condensation, mould growth and damp forming on interior walls and ceilings.

The work will be guaranteed for 25 years by the Cavity Insulation Guarantee Agency (CIGA), the government endorsed guarantee scheme.